252043420 has 24 divisors (see below), whose sum is σ = 531314784. Its totient is φ = 100431936.

The previous prime is 252043381. The next prime is 252043427. The reversal of 252043420 is 24340252.

It is a junction number, because it is equal to n+sod(n) for n = 252043391 and 252043400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252043427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18699 + ... + 29218.

It is an arithmetic number, because the mean of its divisors is an integer number (22138116).

Almost surely, 2^252043420 is an apocalyptic number.

252043420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

252043420 is an abundant number, since it is smaller than the sum of its proper divisors (279271364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

252043420 is a wasteful number, since it uses less digits than its factorization.

252043420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48189 (or 48187 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 252043420 is about 15875.8754089341. The cubic root of 252043420 is about 631.6722349751.

Adding to 252043420 its reverse (24340252), we get a palindrome (276383672).

The spelling of 252043420 in words is "two hundred fifty-two million, forty-three thousand, four hundred twenty".